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Acetelyne is stored in gas cylinder in.......

  • A.In gaseous form
  • B.In liquid form
  • C.In solid form
  • D.All of above

Answer: B

The paper's answer is in liquid form.

Acetylene cannot safely be stored as a compressed gas: above about 15 psi (1 bar gauge) it can decompose explosively. Cylinders are therefore packed with a porous filler soaked in liquid acetone, and the acetylene is dissolved in the acetone, which can hold many times its own volume of the gas. This dissolved acetylene, held in a liquid, is what the key means by liquid form.

Storing it as free compressed gas is exactly what must be avoided, and it is never stored as a solid, so the remaining options are wrong.

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